A Binary Equatorial Synchronous Retrograde Orbit is an orbit that would travel in the opposite direction of GEO and would pass over the same point on Earth twice per day at the same altitude of GEO. ...

@Cristiano's question No reboosts for the ISS shows the plot below. I don't have the original source. I've added some annotations including four arrows to indicate what looks like short periods (a day ...

This presentation talks about 'target markers' which are five soft, reflective balls that are released onto the asteroid's surface prior to landing. They allow the probe to more precisely locate the ...

Is it possible to calculate max-q based on just upwards velocity instead of specially inputting a given altitude/air density? Based on this graph of Falcon 9 launches till MECO below "Air Pressure vs. ...

Is there any particular deep area, trench, fissure, lava tube or otherwise on of Mars in which a person could survive with only an oxygen supply? How deep would plants or animals have to be in Mars ...

In order to obtain a more accurate radiation estimate in this question, I am trying to approximate and/or determine the altitude of a satellite as a function of time. The satellite has an apogee of ...

Differentiating Medium Earth Orbits from High Earth Orbits at the geosynchronous altitude makes intuitive sense. Is there some meaningful difference between orbits above vs. below 2,000 km, or is the ...

Don't be distracted by the 1960 Mercury shown below. Reading about Irene Fischer (also here, and mentioned in this answer) and seeing the Fischer 1960 Mercury Ellipsoid turn up in tables of ellipsoid ...

The altitude of a satellite is the distance between the Earth's surface and the satellite, but the Earth itself is not spherical. At the equator the Earth's radius is 21 km more than at the poles, and ...

I understand that all satellites must have burn corrections to keep their orbits where they are needed. However my question is specifically about what those changes are in magnitude from the desired ...

Have there ever been significant changes in the altitude of the ISS?
By significant, I mean changes greater than about 40 km, thus by far exceeding the periodic reboosts.
If there haven't been, then ...

So if we have a satellite in a non circular orbit, can't state a time independent altitude (we can only state the altitude at a given time). We can however state a constant value for the semi-major ...

Is there a relation between the mass of a satellite and its orbital altitude? I mean, will a heavy satellite orbit at a higher or lower altitude than a lighter one, considering everything else being ...

Dawn orbits Ceres at thousands of kilometers periapsis altitude, and doesn't seem to plan to go lower than 375 km. In contrast, Rosetta has been down to about 30 km altitude, and will finally even try ...

I am just curious, in theory about what the potential impacts would be to science if we were to have a space station that was outside of Low Earth Orbit. Of course, it would take longer to get to and ...

So, let's save some travel time and throw a spaceship, rather than an airplane, across the Atlantic or Pacific ocean on a ballistic trajectory. How high would it have to go? How high do the doomsday ...

What does a typical Attitude and Orbit Control System (AOCS) look like for a very small satellite? How does such a satellite control its attitude and orbit? Are there any means of propulsion at this ...

It is said that a launch to orbit requires a Delta V of 9.3–10 km/s, and this encompasses orbital speed, air drag, gravity drag, and the energy to raise altitude to low Earth orbit. But I'm troubled ...

Where does space start? If space starts right beyond the solid part of a planet, then wouldn't Jupiter not be a planet? And if it starts at the end of the atmosphere, at what point does one escape the ...

According to a recent news article a group of USC students are attempting to launch a rocket "in to space" with a planned height of 62 miles. Making them "the first group of students to successfully ...